$$\left. \begin{array} { l } { - 2 } \\ { 12 } \\ { 12 } \\ { - 7 , 32 x ^ { 2 } + \frac { 1 } { 2 } = 12 } \end{array} \right.$$
$x=-\frac{\sqrt{23}}{8}\approx -0.59947894\text{, }y=-2\text{, }z=12\text{, }a=12\text{, }b=-7$
$x=\frac{\sqrt{23}}{8}\approx 0.59947894\text{, }y=-2\text{, }z=12\text{, }a=12\text{, }b=-7$
